Among the major uses of Potassium Iodide is the use as a nutritional supplement in animal feeds and also the human diet.

For the latter, it is the most common additive used to “iodize” table salt.

Potassium Iodide is also used in pharmaceutical applications where it is given in tablet form for emergency purposes related to blockade of radio iodine uptake, a common form of radiation poisoning due to environmental contamination by the short-lived fission product iodine-135.

Furthermore, Potassium Iodide is a component in some disinfectants and hair treatment chemicals, and it is also used as a fluorescence quenching agent in biomedical research.

• A nutrient in table salt as a source of iodine.

• A dietary supplement for human consumption and in animal feeds.

• A sanitizing agent for food processing equipment.

• When KI functions as a microbiocide, it is used in emergency drinking water purification/disinfection

• fresh food sanitization,

• food-contact surface sanitization, hospital surface disinfection

• In addition, this substance can be used as an expectorant for treatment of chronic respiratory diseases, iodine source in treatment of thyroid disorders

• manufacture of photographic emulsions (used with silver nitrate),

• ingredient in personal hygiene products,

• laboratory reagent for analytical chemistry.

• as a thyroid blocking agent, potassium iodide protects the thyroid gland by blocking the thyroidal uptake of radioactive iodine.

• It may be used prior to and following administration of radioactive isotopes and in radiation emergencies involving the release of radioactive iodine.